* Heavy Rock Splitting Wedge is used for splitting large hard stones, rocks, granite, marble and concrete. Place a rock splitting wedge spaced 6 to 10 inches apart over the rock that needs to be blasted to work. You can increase or decrease the number depending on the size of the rock. It can blast rocks up to 78 inches in diameter* The rock crusher is a tool that uses non-blasting methods to break up rocks and can be completely replaced Ideal and efficient tool for secondary blasting and chemical separation, environmentally friendly* High-quality spring steel forgings are durable and high-hardness steel, heat treatment process, high hardness and good toughness. The material is harder and more durable; the surface of the split ...